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| roduct name |
In-the-ear hearing aid |
| Product model |
A-28 |
| Working voltage |
d.c.3.7V |
| Battery capacity |
35mAh |
| Endurance |
About20 hours |
| OSPL90 Maximum OSPL90 |
≤113dB+3dB |
| OSPL90 High frequencyaverage OSPL90 |
107dB+4dB |
| Full range sound gain(high-frequency average) |
28dB+5dB |
| Total harmonic distortion |
<7%+3% |
| Thefrequency response range is notnarrowthan |
450HZ~3000Hz |
| Equivalentinputnoiselevel |
≤29dB +3dB |
| Product size |
≈31.4*13.5*17.9 |
| Weight |
≈5.3g |
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Maximum sound output: ≤127dB ±4dB
High frequency average: 108dB ±4dB
Full range sound: 33dB ±5dB
Total harmonic distortion: ≤1%
Frequency response range: 200Hz ~ 750Hz
Equivalent input noise level: ≤17dB ±2dB
Consumption: 2.5mA
